langchain-openai==1.1.7

Changes since langchain-openai==1.1.6

release(openai): 1.1.7 (#34640) fix(openai): raise proper exception OpenAIRefusalError on structured output refusal (#34619) fix: handle empty assistant content in Responses API (#34272) (#34296) fix(core): serialization patch (#34455) fix(openai): handle function_call content in token counting (#34379) fix(openai): filter function_call blocks in token counting (#34396)